USRE7849E - Improvement in machines for raising or flanging the edge of sheet metal - Google Patents

Description

H, FACES.

Mon-INES For. Misura on HANGING THE EDGE oF SHEET-HETAL.-

No. 7,849. Y Y Reisguea Aug-.14,187'L( N.PE\'ERS, PHOTO-LIYHOGRAPHER, WASHINGYCN, D t;4

. UNITED STATES `PirrENfr OFFICE.

, HENRY FAoHs, 0E NEW YORK, N. Y.

IMPROVEMET IN MACHINES FOR R'AlSlNG 0R FLNGING l'HE EDGE OFSHEETMETAL.

Speoilication forming part of'Letters Patent No. 44,945, dated November B, 1864; Reissue No. 1,849. dated Augustli, 1877; application iiled June 13, 1877.

' To all whom it may concern:

I hereby declare that the following is a full,

clear, and exact description thereof, which will enable others skilled in the art to make and usey the same, reference being had to the accompanying drawing, forming part of this specification.

My inveu tion relates to an improved method and machine for turning up, raising, or danging the edge of sheet-metal blanks; and it has for its object the rapid forming of `a flange on such blanks.

It consists, first, of the method of kforming the flange-that is to say, turning up, raising, or Hanging the edge of a sheet-metal blank by clasping it between a pair of rolls, gradually elevating the blank outside of therolls to the desired angle while rotating the blank by means of the rolls.

Second. It consistsin the combination of a tilting platform or table and a pair of angingrolls, said table being actuated so as to move upward in the arc of a circle, as hereinafter described, and the rolls to clasp the edge of a metal blank and rotate it. .f

Third. It consists in the arrangement of revolving langiug-rolls, a cogged segment, which is permanently attached to a pivoted table, and of suitablegearing which imparts motion to said segment, and so raises thetable to an angle with the axis of the rolls, so that the metal blank is gradually bent at the point hereinafter described as the bendingpoint. Y

This 1 accomplish by the combination of two arbors geared together suitable gearwheels to impart motion to them; rolls'which are attached to the front projecting ends of said arbors, and revolve with them a swinging or tilting platform or table located in front of the rolls, so pivoted in bearings that it can be raised to an inclination or angle to the longitudinal axis of t-he rolls in such a manner that the body of the blank (which rests upon said table) can be gradually brought from a horizontal to an inclined position or angle, while its edge is exposed to the action of the flanging-rolls; a cogged segmentlattached to said table, by which lit is moved; a pinion and shaft, which actuate said segment; a ratchet- Wheel and pawl, which prevent back movement of said pinion and shaftwheu the table is being raised stops or guides, which Vguide the metal blank when being worked, and also determine the width of the rim or flange; a hand-screw for holding the upper arbor down, and a device for raising said arbor, in order that the rolls may be adjusted to the thickness of the metal; two Winches, one for imparting motion to the arbors, and the other to the table, all of which are illustrated in detail inthe drawings, in which- Figure 1 represents a sectional side elevation of the invention; Fig. 2, a sectional plan or top view of the same, the plane of section .being indicated by the line a: fr, Fig. 1. Fig.

la large gear-wheel on the rear end of the lower arbor, outside of its bearings in A. Meshing into wheel H is a pinion, H2, which is fast on a short shaft, bavingits journals, as shown in Fig. 1, just above the rear journal of the upper arbor. Said shaft and pinion are rotated by the winch I, and the motion so imparted is conveyed to the rolls on the arbors B B. The upper arbor is so arranged that it can be'raised from or depressed to the lower arbor, K being a hand-screw, by which it is held down ou the sheet metal when it is being worked between the rolls. L is a vertical rod provided with a spring under its head, and a ring or collar, M, attached to its lower end. Said collar loosely eneircles the upper arbor, as shown in Fig. 1. By this collared and headed rod and the spring said arbor is raised. C C are two Hanging rollers, secured to the front projecting ends of the arbors B B by suitable nuts or other means, so that they can be readily taken oif and replaced by others of a di'erent shape.

B is a bench, to which the frame A is secured. Two standards, E', rise from this bench, one on each side of the rolls C C, and form the bearings for the gndgeons e of the tilting table. ,E is said table, which is situated immediately in front of the rolls, and is pivoted at each end of the side next the rolls by its gudgeons, which 'journal in the standards E', so that in turning on said gudgeons it can be raised to an angle or inclination with the axisof the rolls, whereby the body ofthe blank, when being flanged, is caused to move in the arc of a circle whose center is in a. point where a vertical line drawn through the face-axes of the rolls would cross a hori zontal transverse line drawn through the thickness of that portion of the blank which is in line with the face of the rolls. This point may also be termed the bending-point of the blank. F is a cogged segment, securely attached to and extending down from the bottom of said platform,into the teeth of which mesh the cogs of the pinion G, located under the bench or bed-plate D. Said pinion is fast on the shaft b, which is journaled in suitable bearin gs, and is rotated by the winch c, Fig. 2. Said shaft and pinion are prevented from any back movement by the ratchet-wheel d on the shaft b, the teeth of which,A are engaged by the pawl f. Said pawlcanvbe disengaged bythe screw g when it is desired to lower the table E.

On each side ot' the rolls are the stops or guides h, which are mounted on the horizontal rods t' 1i, which pass horizontally through frame A at each side of the arbors, as shown in Fig. 2. Said rods are adjustable, so that the stops or guides may be moved out or in to determine the width of the desired rim or flange.

Operation The blank to be raised or anged is cut outinto the desired form and size, and placed on the table; its edge is then inserted between the rolls. The upper arbor being down, the edge is clasped between the rolls,

`which are made to press upon this portion of the blank by screwing down the screw K. The

Hanging-rolls are then put in motion, and as they revolvetheir friction on the edge of the b'l'alk causes it to revolve, or cal'ries it round on the table, with its edge constantly bearing against and guided by the stops h, which have previously been adjusted to determine the width of the proposed rim or flange.

Motion being imparted to the shaft b, it is conveyed to the table through the gearing and cogged segment, causing the table to gradually move upward to the position shown in the drawing, or to such position as the angle of the rim or flange may demand. By this action of the table the body of the blank resting upon it is caused to gradually move upward in the arc of a circle, as before described, while its edge is clasped between and exposed to the action of the rolls- Thus a rim or flange is formed on sheet-metal articles of an y shape other than those havingsquare corners without the use of the hammer, and with but little labor.

Having thus described my invention and its operation, whatI claim, and desire Letters Patent for, is-

.L As an improvement in the method of tlanging sheet-metal blanks, the method hereinbet'ore described-that is to say, clasping the edge of the blank between a pair of' rolls, and then rotating the blank by means of the rolls, and gradually elevating the main portion of the blank, which is outside of the rolls from the plane of its contact with the rolls into a plane at an angle therewith, so that a flange is formed on the blank by the action of the rolls and the upward movement of the body of the` blank, substantially as set forth.

2. In combination with the hanging-rolls, the tilting platform, operating in manner as described, and for the purpose set forth.

3. The combination, with langing-rolls, of a cogged segment attached to a tilting table, and of gearing for operating the segment, whereby the table is raised to an angle withv the axes of the Hanging-rolls, as and for the purpose set forth.

HENRY FACES.

Witnesses WM. M. OUTHBERT, W. KUFFNER.

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